Widening economic inequality in the USA has been accompanied by increasing disparities
in health outcomes. The life expectancy of the wealthiest Americans now exceeds that of the …

Income inequality in the USA has increased over the past four decades. Socioeconomic
gaps in survival have also increased. Life expectancy has risen among middle-income and …

A recent literature has shown that when adoption of a treatment is staggered and average
treatment effects vary across groups and over time, difference-in-differences regression …

The canonical difference-in-differences (DD) estimator contains two time periods,” pre” and”
post”, and two groups,” treatment” and” control”. Most DD applications, however, exploit …

To estimate the dynamic effects of an absorbing treatment, researchers often use two-way
fixed effects regressions that include leads and lags of the treatment. We show that in …

In this article, we consider identification, estimation, and inference procedures for treatment
effect parameters using Difference-in-Differences (DiD) with (i) multiple time periods,(ii) …

This paper discusses two important limitations of the common practice of testing for
preexisting differences in trends (“pre-trends”) when using difference-in-differences and …

Using 40 countries' subnational data, we estimate age-specific mortality-temperature
relationships and extrapolate them to countries without data today and into a future with …

This paper estimates the long-run effects of childhood Medicaid eligibility on adult health
and economic outcomes using the program's original introduction (1966–1970) and its …

Abstract For 40 years, the Tuskegee Study of Untreated Syphilis in the Negro Male passively
monitored hundreds of adult black men with syphilis despite the availability of effective …